Thermometer



Nov. 4, 1924. 1,514,535

J. KOVAR THERMOMETER Filed Jan. l2 922 Illlllli Ml .lllllmmm MA 9 (/bE/d) 1/4,? WWW ATTORNEYS- Patented Nov. 4, 1924.

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JOE KOVAR, 0F COUPLAND, TEXAS.

THERMOMETER.

Application filed January 12, 1922.

To all whom it may concern.-

Be it known that I, Jon KovAR, a citizen of the United States, and resident of Coupland, in the county of Williamson and State of Texas, have invented a new and Improved Thermometer, of which the following is a full, clear, and exact description.

My invention relates to a thermometer, and aims to provide a device of this character particularly adapted for use in connection with incubators.

It is a well appreciated fact that considerable diiiiculty has been experienced in connection with the necessary temperature variations of an incubator. More particularly it is well understood that an incubator must be cooled twice a day when in operation. This cooling ranges from 92 Fahrenheit for the first week, 94 for the second week, and 96 for the last week.

While it is an easy matter for each operator to permit the interior of the incubator to cool to this extent by means of a conventional thermometer associated with the incubator, it will be understood, nevertheless, that the sudden fall or rise of temperature in the incubator is not materially absorbed by the eggs. In other words, each egg presents a shell, skin, etc. all of which act as insulating layers for the fertile spot within the egg. Thus this point is obviously not immediately cooled to the extent indicated by the thermometer having its bulb extending into the incubator.

With this in mind my present invention aims to provide a thermometer particularly adapted for use in connection with incubators, and similar appliances, and by means of which the temperature registered will correspond as nearly as oossible to the interior temperature of the egg, thus eliminating the uncertainty of guess-work and improper cooling, etc. which has heretofore been regarded as an obvious part of the operation of an incubator.

Among further objects of this invention is that of constructing a device of the character stated which may be manufactured at a relatively nominal figure. and reference is had to the attached sheet of drawings as illustrating one practical embodiment of the same, and in which;

Figure 1 is a face view of a thermometer embodying my improved construction.

Figure 2 is a sectional side view taken Serial No. 523.758.

along the line 22 and in the direction of the arrows indicated in Figure 1.

Figure 3 is a plan view of the device, and

Figure 4 is a transverse sectional view taken along the line 4-4 and in the direction of the arrows indicated in Figure 1.

The essence of my invention consists in the provision of a thermometer of any desired type, the bulb or actuating portion of which is insulated from direct contact with the surrounding atmosphere so as to duplicate as nearly as possible the actual insulating qualities of an egg.

Thus it will be seen that the reference numeral 5 indicates the back of a conventional thermometer of any desired type, which back provides a graduation 6 and mounts a stem 7 and bulb 8 of an ordinary thermometer.

However, contrary to conventional construction, it will be seen that the bulb end of the thermometer is enclosed within walls, and these walls are preferably provided by utilizing a plurality of layers of material 9 which may be in the nature of ordinary galvanized tin. It will thus be understood that these layers of material may be attached to the back or frame of the thermometer by an end wall 10 and thus the bulb will be insulated from direct contact with the exterior atmosphere whereby the temperature of the air directly surrounding the bulb 8 will correspond to the temperature to which the fertile spot of the egg is subjected.

Thus it will be obvious that upon the thermometer being associated with an incubator, that an operator will be enabled to know the exact degree of temperature to which he is subjecting the fertile spots of the eggs, and it will be seen that the difiiculties aforementioned will be overcome it being further understood, as has been indicated in Figures 2 and 3 that a portion of the upper wall 11 may be eliminated or removed so that the exact conditions of temperature may be ascertained in the event that a complete enclosure of the bulb insulates said bulb to too great an extent.

Thus all of the objects set forth in the preamble of this specification have been accomplished, and it will be further understood that numerous modifications of structure might readily be resorted to without in the least departing from the scope of my claims; which are- 1. Athermometer comprising a frame, a stem secured to the frame and provided with a bulb at its lower end and a chamber enclosing the lower end of the frame and bulb of the stem, said chamber having side walls formed of a plurality of layers of material and end walls secured to the several layers, one end wall being secured to the said frame and the other provided with an opening.

2. A thermometer comprising a frame having side flanges, a stem secured to the frame and provided witlra bulb, .anda chamber enclosing the lowerend of the frame and the bulb ofthe stem said chamber having its vided with an 0pening through which the 20 frame and the stem project.

Jon KOVAR.

side wallsformed of a plurality of layers of 15 

